h1 {
    color: #215487;
}
span {
    border: 2px solid black;
    background-color: #eee;
}
/* 两个wrap把footer也变黑了,估计是文档错误  */
#wrap {
    background-color:#222;
    width:80%;
    margin:0 auto;
}

.bg-blue { background:#3498db;}
.bg-green { background: #1abc9c;}
/* 文档这里有错误，前面不应该带点 */
h2 {color:white;}

.dummy-boy {background-image:url("../img/gaosan.gif")}
.dummy-girl {background-image:url("../img/bear.gif")}

.text-purple { color:purple;}
.text-yellow { color:yellow;}
.text-light-bg-dark { color:#eee; background-color: #222;}

.bg-01 { background-image: url("../img/bk.jpg") }
